Module: Yourub::CountFilter

Defined in:
lib/yourub/count_filter.rb

Constant Summary collapse

VIEWS_COUNT_NUMBER = 
/\d*\z/
ARITHMETIC_OPERATOR = 
/\A<(?!=)|>(?!=)|<=|>=|==|!=/

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.filter ⇒ Object

Returns the value of attribute filter.



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# File 'lib/yourub/count_filter.rb', line 5

def filter
  @filter
end

Class Method Details

.accept?(entry) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/yourub/count_filter.rb', line 10

def accept?(entry)
  return true if @filter.nil?
  validate_filter
  apply_filter(entry)
end

.apply_filter(video) ⇒ Object 



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# File 'lib/yourub/count_filter.rb', line 30

def apply_filter(video)
  operator = @filter[:views].match(ARITHMETIC_OPERATOR).to_s
  number_to_compare = @filter[:views].match(VIEWS_COUNT_NUMBER).to_s.to_i
  number_founded = get_views_count(video)
  return number_founded.send(operator, number_to_compare)
end

.get_views_count(video) ⇒ Object 



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# File 'lib/yourub/count_filter.rb', line 37

def get_views_count video
  return 0 if video['statistics'].nil?
  return video['statistics']["viewCount"].to_i
end

.validate_count_filter ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/yourub/count_filter.rb', line 23

def validate_count_filter
  count_number_invalid = (@filter[:views] =~ VIEWS_COUNT_NUMBER).nil?
  operator_invalid = (@filter[:views] =~ ARITHMETIC_OPERATOR).nil?
  raise ArgumentError.new("arithmetic operator not detected") if operator_invalid
  raise ArgumentError.new("view count number not detected") if count_number_invalid
end

.validate_filter ⇒ Object 



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# File 'lib/yourub/count_filter.rb', line 16

def validate_filter
  unless @filter.is_a?(Hash)
    raise ArgumentError.new("The filter #{@filter} should be an Hash")
  end
  validate_count_filter
end